Why is my Audi 80 producing a strange noise when idle?

I recently purchased a used Audi 80 and noticed that it makes a strange noise when it's idling. It's a bit hard to describe, but it almost sounds like a rattling or grinding noise. What could be causing this and should I be worried?

It's possible that the strange noise you're hearing is coming from your exhaust system. Check for any loose or damaged components that could be causing the noise. If you're not familiar with car repairs, it's best to take it to a mechanic for a proper diagnosis.

I had a similar issue with my Audi 80 and it turned out to be a problem with the fuel injectors. It's important to get this checked out as it can affect your car's performance and fuel efficiency. Take it to a trusted mechanic for a thorough inspection.

I've encountered this issue before and it's most likely due to a faulty idle control valve. This part controls the engine's idle speed and if it's malfunctioning, it can produce strange noises. Get it checked and replaced if necessary by a reputable mechanic.